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Analog Devices Inc./Maxim Integrated MAX619EPA+
- Part No.:
- MAX619EPA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX619EPA+.pdf
- Description:
- IC REG CHARGE PUMP 5V 50MA 8PDIP
- Quantity:
- Payment:
- Shipping:
Inventory:543
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Product details
Overview
The MAX619EPA+ from Maxim Integrated is a regulated 5V ±4% charge-pump DC-DC converter designed for low-voltage battery-powered systems. It operates from 2V to 3.6V input (e.g., two alkaline or NiMH cells), delivers up to 50mA output current at -40°C to +85°C, requires no inductors, and uses only four external capacitors - enabling compact 0.1in² designs.
For engineers reviewing the MAX619EPA+ datasheet, MAX619EPA+ pinout, MAX619EPA+ application, or MAX619EPA+ equivalent, key selection criteria include guaranteed 50mA output over temperature, logic-controlled shutdown with 1µA max quiescent current, internal 500kHz oscillator, and compatibility with standard 8-pin DIP footprint for drop-in replacement in legacy space-constrained designs.
Technical Context
The MAX619EPA+ employs a pulse-skipping control architecture to regulate output voltage, dynamically switching between voltage-doubler mode (VIN ≥3.0V) and voltage-tripler mode (VIN ≤2.5V), with hybrid 2.5× operation between 2.5V–3.0V. This adaptive topology maintains >75% efficiency across its full input range and load profile.
Its CMOS-compatible SHDN pin enables active-high logic control of output disconnect and ultra-low-power shutdown (≤1µA). Internal circuitry is powered from the higher of VIN or VOUT, improving stability during brown-out conditions and ensuring reliable startup even at 2V input.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0V ±4% - tightly regulated rail suitable for 5V logic, Flash programming, and op-amp supplies without external feedback. |
| Max Output Current | 50mA @ VIN ≥3V - sufficient to power microcontrollers, sensors, and small peripherals in portable instruments. |
| Input Voltage Range | 2.0V to 3.6V - matches nominal voltage of two primary or rechargeable cells, eliminating need for LDO pre-regulation. |
| Shutdown Current | 1µA max - enables multi-year battery life in always-on remote sensing or backup systems. |
| Oscillator Frequency | 500kHz fixed - allows use of small 0.22µF ceramic flying capacitors and minimizes EMI vs. lower-frequency inductor-based converters. |
| Operating Temp | -40°C to +85°C - qualified for industrial and extended-temperature embedded applications, unlike commercial-grade MAX619CPA/CSA variants. |
| Package | 8-pin plastic DIP - through-hole mounting supports manual assembly, prototyping, and high-reliability board-level repair. |
Pinout & Package
MAX619EPA+ is housed in an 8-pin plastic DIP package (0.300" wide), compatible with standard through-hole PCB footprints and socketing. Pin spacing is 0.100", with lead pitch matching industry-standard DIP layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| C1+ | Positive terminal of flying capacitor C1 | Connects to one plate of first charge-pump capacitor; critical path for energy transfer in tripler/doubler modes. |
| C1− | Negative terminal of flying capacitor C1 | Reference node for C1; tied internally to switching matrix - must be routed with minimal trace inductance. |
| IN | Main input supply (2V–3.6V) | Primary power source; also powers internal logic when VIN > VOUT - eliminates need for separate bias rail. |
| OUT | Regulated +5V output | Delivers stabilized 5V ±4%; disconnected from IN during shutdown - prevents backfeed into battery. |
| C2+ | Positive terminal of flying capacitor C2 | Second flying capacitor node; shares switching cycle with C1 in tripler mode, used alone in doubler mode. |
| C2− | Negative terminal of flying capacitor C2 | Common return for C2; forms part of charge-transfer loop - must be low-impedance to GND. |
| SHDN | Active-high shutdown control | CMOS-compatible input; drives internal switch to halt oscillation and isolate OUT from IN when high. |
| GND | Analog/digital ground reference | Single ground plane required; substrate tied to this pin - routing integrity directly impacts ripple and regulation accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| No-inductor design | Eliminates magnetic components and associated EMI, simplifying layout and reducing BOM cost in space-limited handheld devices. |
| Adaptive voltage multiplication | Automatically selects 2× (doubler), 3× (tripler), or 2.5× mode based on VIN - maintains >75% efficiency across full 2V–3.6V input range. |
| Load-disconnect shutdown | Physically isolates OUT from IN during shutdown - prevents battery drain through downstream loads or leakage paths. |
| Ultra-small footprint | Entire solution occupies <0.1in² with only four external capacitors (two 0.22µF + two 10µF), ideal for pico-sized medical or IoT sensors. |
| Wide temperature qualification | Specified from -40°C to +85°C - supports deployment in automotive cabins, industrial controls, and outdoor metering without derating. |
Applications
| Two-Cell to 5V Conversion | Portable Microprocessor Systems |
|---|---|
Use Scenario: Powering 5V logic from two AA/AAA batteries in handheld test equipment or barcode scanners. IC Role / Device Role / Timing Role: Primary regulated DC-DC converter generating stable 5V rail from declining battery voltage. Use Value: Maintains 5V ±4% output down to 2V input, extending usable battery life by avoiding premature brown-out shutdown. | Use Scenario: Supplying 5V to microcontroller I/O, ADC reference, and peripheral interfaces in battery-operated data loggers. IC Role / Device Role / Timing Role: System power manager delivering low-noise, inductor-free 5V with programmable shutdown. Use Value: 1µA shutdown current enables multi-year operation on coin-cell or Li-primary batteries without duty-cycling. |
| 5V Flash Memory Programmer | Compact Op-Amp Supply |
Use Scenario: Providing precise 5V programming voltage to NOR/NAND Flash in field-upgradeable embedded modules. IC Role / Device Role / Timing Role: Precision voltage source with tight regulation and fast transient response for memory write cycles. Use Value: 5V ±4% tolerance and <100mV ripple meet JEDEC Flash programming specs while eliminating inductor-induced noise coupling. | Use Scenario: Generating clean 5V bias for rail-to-rail op-amps in portable instrumentation amplifiers or sensor signal chains. IC Role / Device Role / Timing Role: Low-EMI analog supply generator decoupled from noisy digital rails. Use Value: No-inductor architecture avoids magnetic interference with sensitive analog front-ends, preserving SNR in µV-level measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar regulated charge-pump DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX619ESA+ | Same electrical specs but in 8-pin SO package; -40°C to +85°C rating identical to MAX619EPA+ | Suitable for automated SMT assembly; requires reflow-compatible PCB layout and lacks through-hole serviceability | Select MAX619ESA+ for volume production with surface-mount processes; choose MAX619EPA+ for prototyping, repair, or mixed-technology boards. |
| TPS60403DBVR | 5V ±4% output, 60mA, 2.7V–6.0V input, 1.2MHz switching, SOT-23-6 package; no C1−/C2− pins - simplified 2-capacitor topology | Better suited for ultra-small footprints (<15mm²) and higher input ranges; lacks dual flying-capacitor flexibility and extended low-VIN operation | Choose TPS60403DBVR when board area is critical and input stays ≥2.7V; retain MAX619EPA+ for true 2V start-up and DIP-based legacy compatibility. |
Compared with MAX619ESA+ and TPS60403DBVR, the MAX619EPA+ uniquely combines through-hole DIP packaging, guaranteed 2V start-up capability, and adaptive 2×/3× charge-pump control - making it the only option qualified for ruggedized industrial prototypes requiring manual assembly and sub-2.5V battery operation.
Availability
MAX619EPA+ is available at Aetrix Electronics and suitable for portable instrumentation, battery-powered microprocessor systems, and compact 5V op-amp supplies requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX619EPA+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power-management ICs for demanding industrial, medical, and communications applications.
The MAX619 product line delivers highly integrated, inductorless DC-DC conversion for space- and power-constrained portable electronics - emphasizing reliability, minimal external components, and wide input-voltage adaptability.
FAQ
What is the minimum input voltage required for MAX619EPA+ to start regulation?
The MAX619EPA+ begins regulation at 2.0V input, maintaining 5V ±4% output down to this threshold. This enables full functionality across the entire discharge curve of two alkaline or NiMH cells, unlike many competing charge pumps that require ≥2.5V or ≥2.7V to initiate switching. The device sustains 20mA output at 2V and scales to 50mA above 3V.
Does MAX619EPA+ require external feedback resistors to set output voltage?
No, the MAX619EPA+ has an internal fixed 5V ±4% regulation circuit - no external resistors or compensation components are needed. The output voltage is trimmed at wafer level and remains stable across temperature and load without user adjustment, simplifying design and reducing BOM count.
Can MAX619EPA+ drive a 50mA load continuously over the full -40°C to +85°C range?
Yes, the MAX619EPA+ guarantees 50mA continuous output current at VIN ≥3.0V across its full specified operating temperature range of -40°C to +85°C. At 2V input, it guarantees 20mA over the same range. These values are production-tested and documented in the Absolute Maximum Ratings and Electrical Characteristics tables.
What happens to the output during MAX619EPA+ shutdown?
During shutdown (SHDN = high), the MAX619EPA+ halts internal switching and physically disconnects the OUT pin from the IN pin using an internal MOSFET switch. As a result, VOUT falls to 0V and no current flows from input to output - preventing battery drain through downstream loads or parasitic paths.
Is MAX619EPA+ pin-compatible with other variants in the MAX619 family?
Yes, all MAX619 variants - including MAX619CPA, MAX619CSA, MAX619EPA+, MAX619ESA+, and MAX619MJA - share identical 8-pin DIP or SO pinouts and electrical behavior. The MAX619EPA+ differs only in its extended -40°C to +85°C temperature rating and DIP packaging, making it a direct drop-in replacement for MAX619CPA in industrial environments.
MAX619EPA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2V
- Voltage - Input (Max):
- 3.6V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 50mA
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX619EPA+ FAQ
1.How can I place an order for MAX619EPA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX619EPA+ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX619EPA+ reliable?
The price and inventory of MAX619EPA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX619EPA+ is usually 5 days.
3.What payment methods are accepted for MAX619EPA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX619EPA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX619EPA+?
MAX619EPA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX619EPA+ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX619EPA+?
For technical support, including MAX619EPA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX619EPA+ requirements.
6.How does Aetrix verify that MAX619EPA+ is sourced from the original manufacturer or authorized distributors?
All MAX619EPA+ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX619EPA+ meets industry standards.
7.What is the process for return or replacement of MAX619EPA+?
All MAX619EPA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX619EPA+, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX619EPA+ part is unused and in its original packaging.
Return procedure for MAX619EPA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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